从数据库中导出图片插入到Excel

1、1.请问如何把 sqlserver 数据库中的图片导入到 excel 的指定表格中打印？数据表有“photo”的字段保存了图片，先想把图片导出到 excel 中打印，需指定 excel 的表格，入 C3 中打印！以下是我用的方法，贴出来，其他人如用到的可参考一下 思路：先从数据库中把图片保存到根目录中（文件名：temp.jpg） ，然后从 excel 中导入该图片，导入后删除 temp.jpgIf Not IsNull(mRst(“photo“) Then读取显示数据库中的图像Set StmPic = New ADODB.StreamWith StmPic.Type = adTypeBinary.Open.Write mRst.Fields(“photo“) 写入数据库中的数据至 Stream 中 .SaveToFile StrPicTemp, adSaveCreateOverWrite.SaveToFile App.Path using System.IO;using System.Data;using System.Drawing;using System.Drawing.Imag

2、ing;using System.Windows.Forms;using Excel;private void EduceExcel()string picPath=Directory.GetCurrentDirectory()+Excelpic.jpg;string ExcelName=Directory.GetCurrentDirectory()+ExcelModul.xls;string fileName = Excel+DateTime.Now.ToString().Replace(:, ) + .xls;Excel.Application app =new Excel.Application();/建立 Excel 对象app.Visible=true;/让 Excel 文件可见Workbook objbook;objbook = app.Workbooks.Add(ExcelName);Worksheet worksheet;worksheet =(Worksheet)objbook.Worksheets1;Excel.Pictures pics=(Excel.Pictur

3、es)worksheet.Pictures(Type.Missing);/建立图片集合对象int TD=1;int p=1;PicItemColletion picItems= PicItem.Getpictems();/读取数据库图片数据集合foreach(PicItem PI in picItems)if(PI.ImageData != null)MemoryStream stream = new MemoryStream(PI.ImageData, 0, PI.ImageData.Length);Bitmap bitmap = new Bitmap(stream);bitmap.Save(picPath,System.Drawing.Imaging.ImageFormat.Jpeg);/保存临时图片文件到硬盘里if(File.Exists(picPath)stream.Close();/关闭图像文件流Range range_1 =range=worksheet.get_Range(A+TD.ToString(),A+TD.ToString();/获取填充单元格范围pics.Ins

4、ert(picPath,Type.Missing);/获取图片Excel.Picture pic = (Excel.Picture )pics.Item(p);/建立图片集合某一图片对象pic.Left = (double)range_1.Left;pic.Top = (double)range_1.Top;pic.Height =(double)range_1.Height;pic.Width =(double)range_1.Width;TD=TD+1;p=p+1; if(File.Exists(picPath)File.Delete(picPath);/删除图片 3.请教各位：我想用 c#，通过闹钟实现定时把 sqlserver 的数据导入到一个 excel 文件，同时生成一个 EXCEL 文件， 不是手动保存，那位大侠知道的指导下，谢谢。要是有什么原代码就太感谢了。这是我写的一个方法，也找了不少资料，参数是，dataset,要生成的 excel 的路径,根据 strColumnName 这一列的值 生成不同的 excel 文件名称为 1.xls,2.xsl. 希望对你有帮助.要

5、先添加对 excel 的引用，在引用中的 com 中选 Public Sub CreateExcel(ByVal _strExcelPath As String, ByVal _ExcelDataSet As DataSet, ByVal _strColumnName As String)Dim xlSheet As Excel.WorksheetDim xlBook As Excel.WorkbookDim xlDBTable As Excel.DataTableDim strPath As StringTrydefine an arry list Dim arry As ArrayListarry = New ArrayListDim dr As DataRowDim i As Integer = 0Dim strAll As Stringfirst,get the deffent columns valuethen send the values into a arrylistdefine a dataview in order to sortDim dv As DataView

6、dv = New DataView(_ExcelDataSet.Tables(0)sort by the columndv.Sort = _strColumnNameDim tmp As StringDim drv As DataRowViewFor Each drv In dvIf tmp drv.Row(_strColumnName) Thentmp = Convert.ToString(drv.Row(_strColumnName)arry.Add(tmp)End IfNextDim k As Integer = 0For k = 0 To arry.Count - 1Dim xlApp As New Excel.ApplicationxlBook = xlApp.Workbooks.AddxlSheet = xlBook.Worksheets(“sheet1“)the files full namestrPath = _strExcelPath 15 using System.IO;16 using System.Data;17 using System.Reflection;

7、18 using System.Diagnostics;19 using System.Configuration;20 using System.Collections;21 using Excel;22 23 namespace ProtoType24 25 / 26 / 套用模板输出 Excel，生成 xls 文件和 html 文件27 / Author: Liu Wen28 / Date Created: 2006-829 / 30 public class ExportExcel31 32 #region variable member33 protected string templateFile = null;34 protected string excelFile = null;35 protected string htmlFile = null;36 protected object missing = Missing.Value;37 Excel.ApplicationClass app;38 Excel.Workbook book;39 Excel.Works

8、heet sheet;40 Excel.Range range;41 private DateTime beforeTime; /Excel 启动之前时间42 private DateTime afterTime; /Excel 启动之后时间43 #endregion44 45 / 46 / 构造函数，将一个已有 Excel 工作簿作为模板，并指定输出路径47 / 48 / Excel 模板文件路径 49 / Excel 输出文件路径 50 / Html 输出文件路径 51 public ExportExcel(string templateFile, string excelFile, string htmlFile)52 53 if(templateFile = null)54 throw new Exception(“Excel 模板文件路径不能为空！“);55 56 if(excelFile = null)57 throw new Exception(“Excel 输出文件路径不能为空！“);58 59 if(htmlFile = null)60 throw new Excep

9、tion(“Html 输出文件路径不能为空！“);61 62 if(!File.Exists(templateFile)63 throw new Exception(“指定路径的 Excel 模板文件不存在！“);64 65 this.templateFile = templateFile;66 this.excelFile = excelFile;67 this.htmlFile = htmlFile;68 69 /创建一个 Application 对象70 beforeTime = DateTime.Now;71 app = new ApplicationClass();72 /app.Visible = true;73 afterTime = DateTime.Now;74 75 /打开模板文件，得到 WorkBook 对象76 try77 78 book = app.Workbooks.Open(templateFile,missing,missing,missing,missing,missing,79 missing,missing,missing,missing,missing,missing,missing,missing,missing);80 81 catch (Exception e)82 83 throw e;84 85 /得到 WorkSheet 对象86 sheet = (Excel.Worksheet)book.Sheets.get_Item(1);87 88 89 / 90 / 将 DataTable 数据导出到 Excel（可动态插入行）91 / 92 /

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